145287255 has 8 divisors (see below), whose sum is σ = 232459632. Its totient is φ = 77486528.

The previous prime is 145287227. The next prime is 145287269. The reversal of 145287255 is 552782541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145287255 - 2⁵ = 145287223 is a prime.

It is a super-2 number, since 2×145287255² = 42216772930870050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4842894 + ... + 4842923.

It is an arithmetic number, because the mean of its divisors is an integer number (29057454).

Almost surely, 2^145287255 is an apocalyptic number.

145287255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145287255 is a deficient number, since it is larger than the sum of its proper divisors (87172377).

145287255 is an equidigital number, since it uses as much as digits as its factorization.

145287255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9685825.

The product of its digits is 112000, while the sum is 39.

The square root of 145287255 is about 12053.5162919374. The cubic root of 145287255 is about 525.7054824040.

The spelling of 145287255 in words is "one hundred forty-five million, two hundred eighty-seven thousand, two hundred fifty-five".